Science news this week: An enigmatic human relative, dark matter discovery and mysterious lights in the sky during nuclear weapons tests – Live Science

Science news this week: An enigmatic human relative, dark matter discovery and mysterious lights in the sky during nuclear weapons tests  Live ScienceEarly hominin Australopithecus afarensis may not be our human ancestor after all  Natural History MuseumNew finds shed light on diet and locomotion in Australopithecus deyiremeda  Nature‘Lucy’ Was Neighbors With an Even Older Human Ancestor, Fossils Reveal  ScienceAlertA fossilized foot found 15 years ago belonged to enigmatic human relative that lived alongside Lucy, scientists say  Live Science